ABAP Select data from SAP table AUKAI into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP AUKAI table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to AUKAI. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the AUKAI table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_AUKAI TYPE STANDARD TABLE OF AUKAI,
      WA_AUKAI TYPE AUKAI,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <AUKAI> TYPE AUKAI.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_AUKAI.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM AUKAI
  INTO TABLE IT_AUKAI.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AUKAI
*  INTO TABLE @DATA(IT_AUKAI2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_AUKAI INDEX 1 INTO DATA(WA_AUKAI2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_AUKAI ASSIGNING <AUKAI>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AUKAI>-MANDT = 1.
<AUKAI>-ABELN = 1.
<AUKAI>-ABELP = 1.
<AUKAI>-ABELG = 1.
<AUKAI>-ABELF = 1.

ENDLOOP.

LOOP AT IT_AUKAI INTO WA_AUKAI.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AUKAI-LFNUM, sy-vline,
  WA_AUKAI-MATNR, sy-vline,
  WA_AUKAI-MATKL, sy-vline,
  WA_AUKAI-MENGE, sy-vline,
  WA_AUKAI-VRKME, sy-vline,
  WA_AUKAI-WEDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AUKAI you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_AUKAI TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_AUKAI INTO WA_AUKAI.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field ABELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AUKAI-ABELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AUKAI-ABELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_AUKAI-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AUKAI-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VRKME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_AUKAI-VRKME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AUKAI-VRKME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VZENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AUKAI-VZENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AUKAI-VZENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNDE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AUKAI-KUNDE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AUKAI-KUNDE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AUART, internal->external for field KAART
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_AUKAI-KAART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AUKAI-KAART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AKTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AUKAI-AKTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AUKAI-AKTNR.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_AUKAI_STR, 
MANDT TYPE STRING,
ABELN TYPE STRING,
ABELP TYPE STRING,
ABELG TYPE STRING,
ABELF TYPE STRING,
LFNUM TYPE STRING,
MATNR TYPE STRING,
MATKL TYPE STRING,
MENGE TYPE STRING,
VRKME TYPE STRING,
WEDAT TYPE STRING,
WETYP TYPE STRING,
WEZEIT TYPE STRING,
VZWRK TYPE STRING,
VZENT TYPE STRING,
KUNDE TYPE STRING,
KDWRK TYPE STRING,
SPBEDAT TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
SPERR TYPE STRING,
APSTP TYPE STRING,
KAART TYPE STRING,
AKTNR TYPE STRING,
AUREL TYPE STRING,
SAPOS TYPE STRING,
RETPO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AUKAI_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_AUKAI_STR-MANDT sy-vline 
WA_AUKAI_STR-ABELN sy-vline 
WA_AUKAI_STR-ABELP sy-vline 
WA_AUKAI_STR-ABELG sy-vline 
WA_AUKAI_STR-ABELF sy-vline 
WA_AUKAI_STR-LFNUM sy-vline 
WA_AUKAI_STR-MATNR sy-vline 
WA_AUKAI_STR-MATKL sy-vline 
WA_AUKAI_STR-MENGE sy-vline 
WA_AUKAI_STR-VRKME sy-vline 
WA_AUKAI_STR-WEDAT sy-vline 
WA_AUKAI_STR-WETYP sy-vline 
WA_AUKAI_STR-WEZEIT sy-vline 
WA_AUKAI_STR-VZWRK sy-vline 
WA_AUKAI_STR-VZENT sy-vline 
WA_AUKAI_STR-KUNDE sy-vline 
WA_AUKAI_STR-KDWRK sy-vline 
WA_AUKAI_STR-SPBEDAT sy-vline 
WA_AUKAI_STR-VKORG sy-vline 
WA_AUKAI_STR-VTWEG sy-vline 
WA_AUKAI_STR-SPART sy-vline 
WA_AUKAI_STR-SPERR sy-vline 
WA_AUKAI_STR-APSTP sy-vline 
WA_AUKAI_STR-KAART sy-vline 
WA_AUKAI_STR-AKTNR sy-vline 
WA_AUKAI_STR-AUREL sy-vline 
WA_AUKAI_STR-SAPOS sy-vline 
WA_AUKAI_STR-RETPO sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.